Scaffold moving and guiding device



March 31, 1970 J. E. ROSANDER SGAFFOLD MOVING AND GUIDIHG DEVICEINVENTOR. Judge E. Rosander 8% mg;

ATTORNEY United States Patent 3,503,466 SCAFFOLD MOVING AND GUIDINGDEVICE Judge E. Rosander, 7200 W. Arkansas Ave., Denver, Colo. 80226Filed Oct. 7, 1968, Ser. No. 765,556 Int. Cl. E04g 1/24 US. Cl. 182-13 8Claims ABSTRACT OF THE DISCLOSURE In combination with a wheel supportedscaffold having vertical and horizontal members connected together, ascaffold moving and guiding device which comprises a wheeled motordriven frame, a transversely extending bolster having extension meansmovable in directions at right angles to each other for fastener-freeengagement with transverse and vertical members of the scaffold, and astandard mounted on the frame for guiding and controlling the movementof the frame and scaffold when engaged by the extension means. Thebolster is pivotally connected to the frame to permit movement of thescaffold and frame relatively to each other when a wheel passes over anuneven surface.

This invention relates to a scaffold moving and guiding device used incombination with a scaffold which comprises vertical and horizontallytransversely and longitudinally disposed members, with wheels on thelower ends of the vertical members.

The main object of the invention is to provide means in the scaffoldmoving and guiding device for adjustable fastener-free engagement withvertical and transversely extending members of the scaffold, whereby anoperator on the scaffold can move and guide the scaffold withoutdismounting the scaffold.

Another object is to provide means for quickly and easily retaining thescaffold engaging means in adjusted positions on the device to engagethe scaffolds and to move the scaffold in any direction by movement ofthe device of this invention.

Another object is to provide extensible means for adjusting the movingand guiding device to engage scaffolds of varying heights.

Another object is to provide means in the scaffold moving and guidingdevice which permits relative movement between the device and thescaffold and prevents binding of the engaged parts when a wheel on thedevice or scaffold encounters an uneven surface.

Other objects and advantages will become apparent from the drawings andfollowing specification.

FIG. 1 is a perspective view of a scaffold moving and guiding deviceembodying my invention.

FIG. 2 is an elevational view of the bolster which is part of thedevice, detached from the rest of the structure.

FIG. 3 is an enlarged elevational view, partly in section, of the meansfor holding the scaffold engaging members in adjusted positions in thebolster.

In that embodiment of the invention shown in the drawings, a horizontalplatform 10 is mounted on a frame 11 and supported on a front wheel 12rotatable in yoke 13 and on two rear wheels 14 rotatable on an axle 15.The rear wheel axle 15 is connected through gearing (not shown) in ahousing 16 to a motor (not shown) powered by battery 17 mounted beneaththe frame 11.

A bolster 20 extends transversely of the platform 10 in a horizontalplane beneath the frame 11. The bolster is connected to the frame 11 bya long bolt 21 which has an apertured head 22 and a shank surrounded byspring 23 held in place by nut 24. A pin 25 extendsd through ice thehead 22 and pivot block 22' and permits the bolster to pivot relativelyto the platform 10 when relative movement between the frame 11 andbolster 20 occurs.

The bolster 20 is hollow and square in cross section. Near its outerends, the bolster has vertical extension means 26 provided withapertures 27. The outer horizontal ends 28 of the bolster are providedwith apertures 29. Extension members 30 with end clevises 30' aretelescopically mounted in the vertical extension means 26 and haveapertures 31 registerable with the apertures 27. Extension members 32with end clevises 32 are telescopically mounted in the horizontal ends28 of the bolster and have apertures 33 registerable with the apertures29.

The extension members 30 and 32 are retained in manually adjustedpositions within the bolster members 26 and 28, respectively, by pins 35provided with eyeletted ends 36 and springs 37 surrounding the pinsbetween their eyeletted ends 36 and the bolster walls they abut, asshown in FIG. 3, where the pin 35 extends through aperture 27 ofextension means 26 and through registering aperture 31 in thetelescoping member 30. The extension members 30 and 32 are manuallyadjusted to engage parts of the scaffold as hereinafter described.

The front wheel yoke 13 has connected to it a steering rod 40 whichextends upwardly into the hollow housing 41. Pins 42 similar to the pins35 heretofore described connect a standard member 43 to the pivotaljoint 44 which is connected to the hollow section 45 of the standard,which in turn is connected by pins 46 to a handle 47 which terminates ina horizontal portion 48 and grip 49. A switch button 50 is mountedadjacent the grip and is connected to electrical wiring 51 having a plug52 for insertion in socket 53 on section 45. The socket 53 is connectedto wiring 54 provided with a plug 55 received in socket 56 in platform10.

A scaffold steadying bracket has arms 57 integral with or connected to asleeve 58 slidable on the section 45, the arms having clevises 59 forengaging a transversely extending part of the scaffold.

The scaffold comprises conventional parts such as spaced apart uprights60, horizontal transverse bars 61 and longitudinal bars 62. Wheels 63are rotatably mounted on the lower ends of the uprights 60.

The scaffold moving and guiding device is moved manually on the wheels12 and 14 into position relatively to the scaffold. The extensionmembers 30 with clevises 30' are adjusted by pins 35 to move theclevises into engagement with a transverse bar 61 of the scaffold. Theextension members 32 with clevises 32' are moved outwardly to engage theuprights 60 of the scaffold. The clevises engage the scaffold partswithout employing any fastening means; only the extension members 30 and32 are adjusted by pins 35 to retain them in proper positions. Thescaffold steadying bracket clevises 59 may be fastened to a transversebar 61 of the scaffold by pins such as the pins 35, although engagementcan be maintained without any fastening means.

After the device has been positioned as shown and described, with theclevises engaging the scaffold, the operator may mount the scaffold andmove and guide the scaffold without dismounting. The motor control 50 iswithin reach of the operator and the handle grip 49 permits easy guidingof the device and scaffold. The pivotal bolster mounting permitsrelative movement of the device and scaffold and permits the wheels toroll over uneven surfaces without binding of the scaffold parts in theclevises 30' and 32'.

An additional section 45 with wiring and plug may be provided forinsertion in the upper part of section 45 to lengthen the steeringstandard when the operator is working on a higher than average scaffold.Likewise, an

extra scaffold steadying bracket comprising the parts 57, 58, 59, may beprovided if the steering standard is lengthened by adding an extrasection 45.

The extension members which are movable in directions at right angles toeach other provide for fastenerfrce engagement with transverse andvertical members of the scaffold, causing the scaffold to move with thescaffold moving and guiding device of this invention in any direction.

I claim:

1. In combination with a wheel supported scaffold having vertical andhorizontal members connected together, the improvement in a scaffoldmoving and guiding device which comprises:

(a) a wheeled motor driven frame,

(b) a transversely extending bolster mounted on the frame havingextension means adjustably fastened to the bolster for fastener-freeengagement with transverse and vertical members of the scaffold, and

(c) a standard mounted on the frame for guiding and controlling themovement of the frame and scaffold when the scaffold is engaged by theextension means.

2. The scaffold moving and guiding device defined by claim 1, in whichthe bolster is pivotally and yieldingly mounted on the frame.

3. The scaffold moving and guiding device defined by claim 1, in whichthe extension means adjustably fastened to the bolster comprise verticalextension members and horizontal extension members telescopicallymounted in the bolster, said extension members and bolster havingregisterable apertures, and pins receivable in the apertures for holdingthe extension members in adjusted positions relatively to the bolster.

4. The scaffold moving and guiding device defined by claim 1, in whichthe extension means terminate in scaffold engaging clevises.

5. The scaffold moving and guiding device defined by claim 1, whichincludes a scaffo d steadying bracket slidably mounted on the standard.

6. The scaffold moving and steadying device defined by claim 1, whichincludes a handle rotatable in the standard, electrical wiring in thehandle and standard, exposed plugs connected to the wiring, and socketsin the standard and frame for receiving the plugs.

7. The scaffold moving and guiding device defined by claim 3, in whichthe pins for holding the extension members in adjusted positionsrelatively to the bolster each comprise a shank, an eyeletted head, anda spring surrounding the shank between the head and a part of anextension member.

8. The scaffold moving and guiding device defined by claim 1, in whichthe bolster is hollow and square in cross section, having a stationaryvertical extension near each of its outer ends, a telescoping extensionmember slidable in each vertical extension, a telescoping extensionmember slidable in each of the bolster outer ends, a clevis on the endof each telescoping member, and manually actuated means for holding theextension members in adjusted positions in the holder for engagement ofthe clevises with transverse and vertical scaffold members.

References Cited UNITED STATES PATENTS 2,526,583 10/1950 Schlessman182-16 3,232,375 2/1966 Warthen l82l6 3,256,954 6/1966 Warthen 18216REINALDO P. MACHADO, Primary Examiner US. Cl. X.R.

